Ensure Apple Mobile File Integrity (AMFI) Is Enabled

HighLevel 1Automatedmacos

Description

Apple Mobile File Integrity (AMFI) was first released in macOS 10.12. The daemon and service block attempts to run unsigned code. AMFI uses launchd, code signatures, certificates, entitlements, and provisioning profiles to create a filtered entitlement dictionary for an app. AMFI is the macOS kernel module that enforces code-signing and library validation.

How it is checked

Audit method: Shell command

shell

out=$(/usr/sbin/nvram -p 2>/dev/null) || exit 1
printf '%s\n' "$out" | /usr/bin/grep -c "amfi_get_out_of_my_way=1" || true

Expected output: 0

How it is fixed

Fix method: Guidance or infrastructure patch

Terminal: sudo /usr/sbin/nvram boot-args="".

Properties

Operating systems: macos-15
Tags: macossystem-access
Reference: CIS Apple macOS 15.0 Sequoia Benchmark v2.1.0 - 5.1.3 Ensure Apple Mobile File Integrity (AMFI) Is Enabled

Check this host

Run this on a machine you are allowed to audit. The scan is read-only.

shell

tmaegis scan --target macos